Thank you all
IT WAS EASY! Thanks to the huge resources available on the forums, I was EASILY able to upgrade my Dell Streak 5 to Android 2.3.3.
For other seekers of information, I am summarising my efforts; let me re-emphasise that all the information and questions I had were already present in this very thread; it's just that it's such a lot of information that one has to wade patiently through it.
I started with Baseband GAUSB1A135100-EU, which translates into "pkg version" 351, and region 00 (see last 5 digits before hyphen).
I wanted to upgrade to 407 region 14. Since there was a change in region, I first installed 350, which is region 14. I don't think there would have been any problem installing 407 directly over 351, but some posters have mentioned that not installing a correct region baseband initially has caused the soft button LEDs to flash continuously.
To be on the safe side, I first installed 350 (region 14) using the instructions for flashing from the XDA Dell Streak 5 wiki. All tools and files are also downloaded from links in the XDA Streak 5 wiki. I copied the "stock" (original) pkg for 350 into the SD card, and renamed it "update.pkg". I then downloaded and installed 350 recovery using "fastboot", then booted into recovery (did not allow phone to boot normally) and chose to update via update.pkg on sdcard.
One reboot later, I was successfully running 350 region 14. I then went to Settings-About phone-Software update, and the phone detected a new update (407). Installing it was as easy as downloading it on the phone and touching the completed download notification in the phone.
Now using 2.3.3 GAUSB1A1406214-EU. Very smooth, and definitely faster than 351.
- It's all out there. You gotta look. Hard.
- Some say "Update.pkg". That didn't work for me. I had to specifically name it "update.pkg" (lowercase)
- I used linux, and Fastboot+ADB package for linux. Very easy to use. But one MUST go through the wiki first.
Thank you all posters who displayed patience with my posts.